Tick borne relapsing fever in Florida, U.S.

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Tick borne relapsing fever in Florida, U.S.

Post by OneGuest » Tue 6 Jan 2009 2:48

http://www.gene-profiles.org/pub/phylog ... in-florida

Phylogenetic analysis of the spirochetes Borrelia parkeri and Borrelia turicatae and the potential for tick-borne relapsing fever in Florida.

Schwan TG, Raffel SJ, Schrumpf ME, Policastro PF, Rawlings JA, Lane RS, Breitschwerdt EB, Porcella SF

Isolates of Borrelia turicatae, Borrelia parkeri, and the Florida canine borrelia (FCB) were examined to further phylogenetically characterize the identities of these spirochetes in the United States. DNA sequences of four chromosomal loci (the 16S rRNA gene, flaB, gyrB, and glpQ) were determined for eight isolates of B. turicatae and six isolates of B. parkeri, which grouped the spirochetes into two distinct but closely related taxa (>98% sequence identity) separate from Borrelia hermsii.

The FCB was clearly separated with the group identified as B. turicatae, confirming this bacterium as a relapsing fever spirochete. Therefore, the potential for tick-borne relapsing fever in humans and other animals exists in Florida and future efforts are needed to determine the enzootic hosts and distribution of this spirochete in the southeastern United States.

Analysis of plasmids demonstrated both linear and circular forms in B. turicatae but only linear plasmids in B. parkeri, which should be of interest to investigators concerned with plasmid diversity and evolution within this group of spirochetes.
J. Clin. Microbiol. Aug (2005); 8(43): 3851-9
http://www.gene-profiles.org/gene/flab- ... bi-2957384

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Re: Tick borne relapsing fever in Florida, U.S.

Post by LymeEnigma » Tue 6 Jan 2009 3:38

Wow ... I knew that relapsing fever was an issue in California; I had no idea is was so prevalent across the board. I'd be willing to bet that a lot of "seronegative Lyme patients" actually have a form of relapsing fever. The diseases are so similar, and I know there are some strains that scientists have had a hard time differentiating class.

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